The Collaborative International Dictionary of English v.0.48:

Developer \De*vel"op*er\, n.
   1. One who, or that which, develops.
      [1913 Webster]

   2. (Photog.) A chemical bath or reagent used in developing
      photographs.

   Note: By the action of the developer, the latent image on a
         photographic plate or film, not perceptible to the eye
         after exposure in the camera, is developed and becomes
         visible.
         [1913 Webster +PJC]

   3. (Dyeing) A reagent used to produce an ingrain color by its
      action upon some substance on the fiber.
      [Webster 1913 Suppl.]

   4. a corporation or individual who finances or organizes a
      real estate development[5].
      [PJC]

WordNet (r) 3.0 (2006):

developer
    n 1: someone who develops real estate (especially someone who
         prepares a site for residential or commercial use)
    2: photographic equipment consisting of a chemical solution for
       developing film

Moby Thesaurus II by Grady Ward, 1.0:

25 Moby Thesaurus words for "developer":
   a, architect, contriver, designer, deviser, enterpriser,
   entrepreneur, fixer, fixing bath, framer, hypo, organizer, planner,
   processing solution, projector, promoter, short-stop,
   short-stop bath, sodium hyposulfite, sodium thiosulfate, soup,
   stop bath, strategian, strategist, tactician



The Free On-line Dictionary of Computing (30 December 2018):

developer

   programmer


The Free On-line Dictionary of Computing (30 December 2018):

developer

        A member of the Debian project.